Combination-lock.



J. TOMCZAK.

COMBINATION LOCK.

APPLICATION FILED NOV- s, 1914.

Patented Feb. 15, 1916.

W|| 4/ 0 III. 7 2 H 3 Z n. m v0 .W H W E F o z 5 w vw u 7 on a 6 1, H 2 w O 0 .HH nun O M M O r I i I w o o m f I w 1 INVENTOR J61; ATTORNEY.

w hvEs m5 COLUMBIA PLANOGRAPII CCL, WASHINGTON, n. C.

JOHN TOMCZAK, OF KANSAS CITY, KANSAS.

COMBINATIQN LOCK.

Specification of Letters IEatent. Patented Feb. 15,1916.

Application filed November 5, 1914. Serial No. 870,459.

To all whom it at my concern.-

Be it known that 1, JOHN TOMCZAK, a subject of the Emperor of Austria-Hungary, re-

siding at Kansas City, in the county-of "Wyandotte and State of Kansas, have invented certain new and useful Improvements in CombinationLocks, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to combination locks, and has for its object the provision of an improved device of this character, with particular relation to the parts entering into the combination whereby the release of the bolt is governed.

To this end, the invention comprises an improved arrangement of detent means adapted under certain conditions to permit the proper movement of the bolt, together with auxiliary guard means for preventing movement of the bolt, independently of the position of said detent means; and also permutation setting and locking means for regulating the detent means and locking the latter when in bolt-releasing position.

With the foregoing and other objects in view the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically de scribed and illustrated in the accompanying drawing wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawing wherein like reference characters denote corresponding parts hroughout the several views: Figure 1 is a plan view of the outer face of a lock embodying tl e present improvements, shown in relation to a door (of which only a fragment appears) Fig. 2 is a vertical section through the rear of the lock casing, on a larger scale and looking in the opposite direction from Fig. 1; Figs. 3 and 4 are detail sections on the lines IIIIH and IVTV, respectively, of Fig. 2: and Fig. 5 is a section on the line VV of Fig. 2, showing only the bolt and bolt-shifting mechanism and omitting the remaining parts for the sake of clearness.

Referring to the drawing in detail, the device comprises a casing 2 having the separable face plate 3 and adapted to be secured to the door lby means o-f-suitable'fas'tenings 5 passing through the lugs 6. Mounted slldingly within the casing 2 is a bolt 8 guided by the yokes 9 carried by the casing and adapted to limit the bolts movement by engagement with the shoulders 10 thereof. When the bolt is shot into locking position, one of its ends is projected through the opening 12 of the casing .(see Fig; 5). The means for shifting the bolt in opposite directions comprises a pair of bell-crank levers 1 L pivoted upon brackets 16 fixed within the casing (Figs. 2 and 5),-and adapted to be moved into engagement with a roller 18 carried by an, angular arm 20 projecting laterally from the bolt 8. Operatively connected with each lever 14 is a push-rod 22 extending outward through a passage .24 provided in the plate 3 and door l, on the opposite side of which said push-rods are provided with the push-buttons 26 and 28, respectively,-mounted slidingly in the sleeves 30 which are carried by the face plate 32 secured by the fastenings 34: to the outer face of the door. A curved leaf spring 36 secured by a strip 38 to theplate 3 acts by engagement with the pins 39 projecting laterally from the levers 14, to hold the latter normally retracted'into the positions illus trated, with the buttons 26, 28, projecting outwardly from the sleeves 0.

The bolt 8 is also provided with, a laterally projecting arm40 by which the bolt may be looked through the action of a detent means which comprises a tumbler or detent wheel 42 mounted upon a bracket l--l and provided with a notch LG-of a size adapted (when the wheel is. in the position shown) to permit passage of the arm 4:0

as the bolt is shifted. .For all other positions of the detent wheel,obviously it will prevent shifting of the bolt. .To prevent movement of the bolt, regardless of the position of the detent wheel 42, an auxiliary detent means is provided, consisting of an arcuate guard 48 adapted to bepositioned opposite said wheels periphery for closing the passage through the notch 46 (see'Fig. 3). This guard member 48' is mounted upon a rocker arm 50 suitably pivoted upon a short shaft 52 carried by a bracket 54 (Fig. 2) secured to the plate 3. The rocker arm 50 is operated by a push-button 56 mounted similarly to the buttons 26 and 28 within a sleeve 58, and connected through a stem 60- (F-igs; andB-l ito -ssaid rockez arm- These auxiliary detent elements are held normally in the position shown 6., in operative position to close passage through said notch -16) by means of a leaf spring 62 carried by a bracket 6 1 and extending in engagement with one side of the rocker arm 50.

For regulating the position of the detent wheel and locking the same when in. the

position illustrated, acombined permutation setting and lock'ng means is provided which comprises the following construction. A bevel pinion 66 is carried by a shaft 68 which is mounted in the bearing 70 provided by the plate 3 and the bearing 72 provided by the angular bracket 7%, which acts also as a brace member, being secured to both the inner and outer walls of the lock casing. A set collar 69 maintains the shaft 68 against axial movement. The pinion 66 meshes with a similar bevel pinion 76 on the hub of the detent wheel 12. The outer end of the shaft 68 is of angular crosssection and extends through a passage 78 formed in the door and the plate 32. on the outer face of which it is fitted with the tubular member 80 having the flange portion 82 resting against the plate 82. A dial ring 8% is mounted fast upon the plate 32 and in concentric relation to the shaft 68 and tubular member 80, while a thumbpiece 86 in the form of a sleeve is slidably and rotatably mounted upon the tubular portion of the member 80, this thumb-piece also having a dial portion 88 adapted for association with the dial 81. The dial portion 88 is formed with an inwardly projecting flange 90 fitting a clearance space 92 left between the ring Sfi. and flange 82 (see Fig. The thumb piece 86 is retained upon the tubular member 80 by a collar 91, while a coil spring 96 is inter-- posed between the flange 82 and the thumbpiece 86 for maintaining the latter normally in engagement with said collar. The thumbpiece 86 is adapted to be clutched with the tubular member 80 for turning of the shaft 68 by means of a tooth 98 designed to enter an opening 100 in the flange 82 when registered therewith and pressure is applied upon the thumb-piece to movethe latter against the action of the spring 96.

The means for automatically locking the detent wheel 42 when it has been turned into the position shown, comprises a latch'101 adapted to snap into a shallow notch 102 of the wheel. this latch extending through an opening 104: in the angular bracket 106 carried by the plate 3. Said latch is pivot ally connected to one arm of a bell-crank 108 mounted upon said bracket 106, the other arm of said bell-crank being provided with a short pin 109 pivotally connected thereto and extending through a passage 110.in.the .door and the plates 3 and 32,

and into the clearance space 92. A spring 112 carried by the bracket 106 bears upon a lug 114: carried by said bell-crank in a direction tending to seat the latch 101 in said notch 102, and when so seated the pin 109 projects into said clearance space 92 in position to be engaged and moved by the flange 90 of the thumb-piece 86, when the latter is operated, for retracting the latch against the action of the spring 112.

From the foregoing description the operation of the lock will be apparent, but the same may be briefly summarized as follows.

The bolt 8 is readily shifted in opposite directions by means of the two push-buttons 26 and 28, in an obvious manner. But the bolt may not be shifted in either direction unless the detent wheel 42 is in proper position to permit passage of the arm 40, and the setting mechanism must be operated to so position the detent wheel. it will be understood that when said detentwheel is rotate said shaft; and the degree of turning necessary to position the detent wheel may of course be ascertained, and thereafter determined for each operation by reference to the dials 81 and 88. Upon reaching the proper point in the rotation, the thumbpiece is released, thereby permitting the latch 101 to spring into the notch 102 and lock the detent wheel in bolt-releasing position. But before the bolt can be shot it is still necessary to operate the auxiliary detent means by pressure upon the button 56, thereby lifting the guard member 48 to clear the passage through the notch 46 for the arm 4C0. It is therefore always necessary to operate the button 56 for every oneration of either of the buttons 26 or 28. lVhen it is desired to reset the detent wheel out of bolt-releasing position, pressure is again applied to the thumb-piece 86 to clutch the same with the tubular member 80 and to retract the latch 101 from locking engagement with the wheel 42, after which the said wheel is turned through a partial revolution; the thumbpiece is then relieved from pressure and given a partial turn to bring the tooth 98 and opening 100 out of It'will also be noted that since register. the shaft 68 is of an ular cross-section at its outer end, the combination may be altered as often as desired by merely shifting the tubular member 68 to a different angular position upon said shaft, so that the moving parts ofv the permutation. means must be rotated to a different position with reference to the dial 8% for properly setting the detent wheel.

What I claim is 1. A lock comprising, in combination, a bolt, a movable detent member adapted in one position to permit movement of the bolt and in other positions to prevent movement thereof, an auxiliary guard member adapted to hold the bolt against movement regardless of theposition of said detent member, means for positioning said detent member and means for shifting said guard member into position for permitting movement of the bolt, said positioning means and shifting means being adapted to be operated either separately or simultaneously.

2. A look comprising, in combination, a bolt, a movable detent member provided with a notch adapted in one position of said member to permit movement of the bolt, and an auxiliary guard member mounted independently of said detent member, said guard member acting in one position to close the passage through said notch and movable to open the passage through said notch and release said bolt.

3. A lcck comprising, in combination, a bolt, a movable detent member provided with a notch adapted in one position of said detent member to permit movement of the bolt, an auxiliary guard member mounted independently of said detent member and held normally in a position to close the passage through said notch, and means for positioning said detent and guard members for permitting movement of the bolt through the medium of said notch.

4. A look comprising, in combination, a bolt, a movable detent member adapted in one position to permit movement of the bolt and in other positions to prevent movement thereof, means for setting said member in position to permit movement of the bolt, and means acting automatically and independently of said setting means to lock said member in its set position.

5. A look comprising, in combination, a bolt, a movable detent member adapted in one position to permit movement of the bolt and in other positions to prevent movement thereof, and combined permutation setting and locking means for positioning said member for permitting movement of the bolt and simultaneously locking said member when positioned.

6. A lock comprising, in combination, a bolt, a movable detent member adapted in one position to permit movement of the bolt and in other positions to prevent movement thereof, means for setting said member in position to permit movement of the bolt,

copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents,

means acting automatically to lock said member in its set position, and means interposed between said setting means and locking means whereby the latter may be rendered inoperative by operation of the former.

7. A lock comprising, in combination, a bolt, a movable detent member adapted in one position to permit movement of said bolt and in other positions to prevent movement thereof, permutation setting means for positioning said member for permitting movement of the bolt, said means including manually operable elements held normally in unclutched relation, and locking means held inoperative by the clutching of said elements and tending upon unclutching thereof to move into locking engagement with said detent member.

8. A lock comprising, in combination, a casing provided with a bolt, a rotary detent wheel provided with a notch adapted in one position of said wheel to permit movement of the bolt, means exterior of the casing and provided with connections to said wheel for setting the latter to permit movement of the bolt, means acting automatically to lock aid wheel in its set position, and means extending from said locking means to the exterior of the casing in position to be engaged and operated by said setting means for unlocking said wheel.

9. A look comprising, in combination, a casing provided with a bolt, a rotary detent wheel provided with a notch adapted in one position of said wheel to permit movement of the bolt, a shaft geared to said wheel and extending to the exterior of the casing, and permutation elements at the exterior of the casing including a member adapted to be mounted in different radial positions upon the outer end of said shaft and operable to rotate the latter to position said wheel for permitting movement of the bolt.

10. A look comprising, in combination, a casing provided with a bolt, a rotary detent wheel provided with a notch adapted in one position of said wheel to permit movement of the bolt, a shaft geared to said wheel and extending to the exterior of the casing, I

a tubular member adapted to be fixedly mounted in different radial positions upon the outer end of said shaft, and a thumbpiece rotatably mounted on said tubular member and adapted to be clutched therewith for rotating said shaft.

In testimony whereof I aflix my signature in the presence of two witnesses.

JOHN TOMCZAK. Witnesses FRANK lVEsoLosKI, PETER MARCZENSKI.

Washington, D. C, 

